VLF stands for Quite Reduced Frequency and is similar engineering Utilized in detectors developed for cash, jewellery, and relics. VLF detectors broadcast at frequencies calculated in kilohertz starting from 3 kHz to 70 kHz. Listed here are five explanations why you may perhaps go with a VLF above a PI https://www.ptwmonksupply.com/forum/topic/36079/how-to-spot-valuable-metals-fast